Stainless Steel Coil Manufacturer & Supplier — GengFei
Cold & hot rolled stainless steel coils in 304/316/201/430 and specialty grades. Finishes 2B, BA, No.4/HL, 8K. Slitting & cut-to-length, polishing, PVC film — fast global delivery.
Báo giá 24 giờ • Giảm giá số lượng lớn • Xả băng tùy chỉnh • EN 10204 3.1
Why Choose GengFei for Stainless Steel Coils?
1) Mill-Backed Supply
Stable sourcing with heat/lot traceability and EN 10204 3.1 certificates.
2) Full Processing
Slitting, cut-to-length, polishing (No.4/HL/8K), PVC film, edge conditioning.
3) Finish Consistency
Matched lots and cosmetic control for appliance/architectural applications.
4) Global Logistics
Seaworthy packing, coil eye-to-sky/wall, fast dispatch and documentation support.
Phạm vi cung cấp (Thông số kỹ thuật nhanh)
| Tham số | Cold-Rolled (CR) | Hot-Rolled (HR) | Ghi chú |
|---|---|---|---|
| Độ dày | 0.25–3.0 mm | 2.0–8.0 mm | Tighter on request |
| Chiều rộng | 600–1500/1524/1800/2000 mm | 1000–2000 mm | Custom slitting to any width |
| ID cuộn | 508 / 610 mm | 508 / 610 mm | Eye to sky / eye to wall |
| Finishes | 2B, BA, No.3, No.4/HL, 8K | No.1 (HR pickled) | PVC/PE films available |
| Edges | Mill / Slit | Mill | Deburr on request |
| Tài liệu | EN 10204 3.1, MTR, CoC | RoHS/REACH theo yêu cầu | |
Tolerances per ASTM A480/EN ISO 9445-2/EN 10051 (as applicable) or buyer specs.
Grades & Finishes
Điểm chung
• Austenitic: 304/304L, 316/316L, 321, 309S, 310S
• Ferritic: 430, 409L
• Song công: 2205 (1.4462), Super Duplex 2507
• High Alloy: 904L
• Cost-efficient: 201/202 (nickel-reduced)
Chemistry per ASTM A240/EN 10088-2; grade selection depends on corrosion, formability, and cost targets.
Bề mặt hoàn thiện
• 2b — general cold-rolled finish for fabrication
• BA — bright annealed for appliance/architectural
• No.4 / Hairline — brushed decorative finish (PVC film)
• Gương 8k — high gloss mirror (laser film)
• Số 1 — hot-rolled, annealed & pickled
Typical Mechanical Properties (Annealed CR)
| Cấp | Tensile (Rm) | Yield (Rp0.2) | Kéo dài | Ghi chú |
|---|---|---|---|---|
| 304/304L | ≈ 520–650 MPa | ≥ 205 MPa | ≥ 40% | Mục đích chung |
| 316/316L | ≈ 520–650 MPa | ≥ 205 MPa | ≥ 40% | Mo-alloyed, better corrosion |
| 201 | ≈ 520–680 MPa | ≥ 260 MPa | 35% | Cost-efficient |
| 430 | ≈ 450–600 MPa | ≥ 205 MPa | ≥ 22% | Ferritic |
| 2205 | ≈ 620–880 MPa | ≥ 450 MPa | ≥ 25% | Duplex high strength |
Values are typical for guidance; actual test requirements per PO (ASTM A240/A480, EN 10088-2).
Standards & Compliance
Material & Product
• ASTM A240 — Cr-Ni stainless plate, sheet & strip (coil)
• ASTM A480 — General requirements (tolerances, finishes)
• EN 10088-2 — Stainless flat products for general purposes
• EN ISO 9445-2 — Tolerances for cold-rolled wide strip & plate
• EN 10051 — Tolerances for hot-rolled strip & plate
• JIS G4305 — Cold-rolled stainless steel plate/sheet/strip
Documentation & Environment
• EN 10204 3.1 — Mill test certificates
• RoHS / REACH — Declarations upon request
• Surface protection — PVC/PE films (laser film for 8K/No.4)
• Truy xuất nguồn gốc — Heat/lot labels; packing list & CoC
Ứng dụng
Thiết bị
BA/2B coils for refrigerators, ovens, panels.
Ngành kiến trúc
No.4/HL/8K coils for façades, lift doors, trims.
Food & Pharma
304/316L for hygienic processing & clean rooms.
Chemical & Marine
316L/904L/2205 for chloride or aggressive media.
Ô tô
409/430 for trims, shields; 304 for exhaust covers.
Chế tạo chung
2B for brackets, enclosures, frames.
Câu hỏi thường gặp
1) 304 vs 316 — which grade should I choose?
304 is the general-purpose choice with excellent formability and cost effectiveness. 316/316L adds molybdenum for better pitting resistance, recommended for coastal, marine or chloride-rich environments, food & pharma washdown areas, and some chemical exposures.
2) What does the “L” mean in 304L/316L?
“L” indicates low carbon (≤0.03%). It reduces the risk of carbide precipitation during welding, improving weld corrosion resistance. Choose L-grades when parts will be welded or stress-relieved.
3) 2B vs BA vs No.4/HL vs 8K — what’s the difference?
2B: smooth, universal fabrication finish. BA: bright-annealed mirror-like for appliances/architecture. No.4/HL: brushed decorative (use PVC film). 8K: true mirror for premium décor; protect with laser film.
4) What tolerances do you support for thickness/width/flatness?
We follow ASTM A480 / EN ISO 9445-2 (CR) and EN 10051 (HR) unless buyer specs are tighter. Typical CR: tight thickness and flatness; width per slit program. We confirm tolerances on the PO and certify on EN 10204 3.1 MTR.
5) Can you slit to narrow widths?
What about burr and camber?
Yes. We slit down to narrow ribbon widths with controlled burr height and camber per spec. Edge options: mill, slit/deburred, or conditioned edges. Share your target burr (e.g., ≤10% of thickness) and camber limits for best results.
6) What coil IDs and packing orientations are available?
Standard IDs are 508 mm and 610 mm. We pack coil eye-to-sky or eye-to-wall as requested, with anti-rust paper, side protectors, steel banding, desiccants, and palletized, seaworthy crates.
7) Which grades are better for coastal or chloride service?
316L is the standard upgrade from 304 in chloride exposure. For higher chlorides or crevice risk, consider 2205 duplex (1.4462) or 904L. Surface finish, design details, and cleaning regime also affect performance.
8) Are your coils suitable for deep drawing and tight bending?
Yes, specify annealed CR coil and your forming target. Minimum bend radius depends on grade, thickness and finish; 304/304L in annealed temper offers excellent formability for deep-drawn and pressed parts.
9) Do you provide surface protection films?
We offer PVC/PE films for No.4/HL and 8K mirror, including laser-cut compatible films. Film type and adhesion level are matched to process (laser, bending, stamping) to minimize residue and orange peel.
10) What are your typical lead times, MOQs, and documents?
Stock finishes can ship quickly; polished/8K or special slitting adds time. MOQ depends on grade/finish (often 3–5 tons per spec). We supply EN 10204 3.1 MTR, packing list, CoC, and RoHS/REACH declarations on request.
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